Grate



(No Model.) 2 Sheets-Sheet 1 E. A. WOOD. Grate.

No. 233,652. Patented Oct. 26, 1 880;

WITNESSES: v INVENTDRA iu illflvwL flziya hmlzg NPEIERS,PnOTb-LITHDGHAPMER, WASHINGTON, n O.

2Sheets-Sheet 2. E. A. WOOD. Grate.

(No Model.)

No. 233,652. Patented Oct. 26,1880.

INVENTDR:

WITNESSES:

UNrran STATES ATENT Orrteno EDWIN A. WOOD, OF UTIOA, NEW YORK.

GRATE.

SPECIFICATION forming part of Letters Patent No. 233,652, dated October26, 1880.

Application filed August 30, 1880. (No modeh) T 0 all whom it mayconcern:

Be it known that l, EDWIN A. Woon, of Utica, in the county of Oneida, inthe State of New York, have invented a new and useful Improvement inGrates, of which the following is a specification, reference being had.to the accompanying drawings, in which Figure 1 isa view in perspective,and Fig. 2 is a vertical sectional view from left to right in front ofthe truunions of Fig. 1. Fig. 3 is a sectional "iew on the line w :v ofFig. 2, showin g the points of support of the central grate. Fig. 4 is aplan view of the bottom of the a11- nular rin The object of my inventionis to provide a grate for stoves, furnaces, &c., which can be easily andspeedily freed from ashes and clinkers from center to circumference.

My invention consists in certain devices, hereinafter more fully setforth, for reciprocating the external ring simultaneously with theturning or oscillating of the central portion or main grate upon itstrunnions, whereby the ashes and cinders are loosened from the center tothe circumference of the grate, and are by the same operation depositedin the ash box or pit.

Referring to the drawings, A designates the base of the furnace, inwhich the ring D is supported by means of trunnious E. The annularportion or ring D is provided with radial projections or bars 0, whichincline downward toward the central portion or grate F. The annularportion or ring D supports, by means of a series or number of lugs orprojections, at, an outer ring, B, said ring being provided with aprojecting flange, a, by which it is supported on the lugs orprojections to of the ring D. These lugs or projections to are ofsufficient length to permit of an annular space or air-passage, b,between the outer and inner rings. The outer ring, B, is provided onaportion of its lower edge with teeth 0, which mesh into a segmentalpinion on the main grate shaft or arm, as hereinafter more fullyexplained.

F is the main grate, made in oval form in horizontal section, as shown,so as to project upward into the body of the furnace. This form ofgrate, which I am aware is not new, prevents the accumulation of ashesat the center of the grate, secures a more extended gratesurfacc, andinsures a more thorough circulazion of air up into the body ofthe-furnace or fire-chamber. The rear end of the grate F is providedwith a trunnion, which tits into a hole or bearing, D, in the innerring, D, as shown in Fig. 3. The outer end of the grate F is providedwith an extended arm, g, by which this end is supported, by a staple,'i, or other suitable device, to the top of the ash-box or base. The armor trunnion g is also provided with a segmental pinion, G, which meshesinto the teeth 0 on the underside of the outer ring, B, so that when thegrate Fis turned or oscillated by means of a crank or wrench, 70,applied to the outer end of arm or trunnion g, the outer ring, B, willbe horizontally reciprocated simultaneously with the verticaloscillation of the grate F.

To prevent the displacement or working up of the outer ring, B, two ormore lugs or brackets, h, are bolted or cast thereon, which projectinward so as to come under the lower edge of the inner ring, D.

\Vhen the grate is to be cleaned or freed from ashes or clinkers, by theturning or rockin g to and fro of the crank or wrench on the end of thearm g the center gratc,F, is turned orroeked on its trunnions, and atthe same time the outer ring, B, is reciprocated, thus forcing ordirecting theashes and clinkers downward, owing to the inclination ofthe projections or bars 0 on the inner ring into the angle between therings and the grate F, from which point they are discharged into the ashbox or pit.

A projecting arm, k, (see Fig. 4,) is cast on the stationary ring D,which, when the grate is in position, comes just under the roof or topof the ash-pit mouth, and prevents both ring D and central grate, F,from rising.

I am aware that it is not new to construct grates with convex surfaces.

I am also aware that grates having a reciprocating ring and anoscillating concavo-convex grate have been combined; but in such casesthe two motions of reciprocation and oscillation have not beensimultaneous.

Having thus fully described my invention, what 1 claim, and desire tosecure by Letters Patent, is

1. In a grate for stoves, furnaces, 850., a vertal pinion G and outermovable ring, 13, protically-oscillating grate, and a horizontally-re-Vided with the teeth or rack (J, whereby the ciprocating ring, arrangedand combined as outer ring, B, is given areciprocating motion shown anddescribed, whereby a joint and siand the grate F a simultaneouslyoscillating 5 multaneous action of the grate and ringis obmotion, as setforth. a

tained by one and the same crank or operat- T ing device, as set forth.I EDWIN 2. The combination of the fixedinner ring, Witnesses: D, and theoscillating grate F, mounted or se- FRANCIS G. WOOD, [O cured therein asdescribed, with the segmenl MORRIS H. AYLSWORTH.

